1
|
Divyavani C, Padmaja P, Reddy PN. Isocyanide-based Multicomponent Reactions (IMCRs) in Water or Aqueous Biphasic Systems. Curr Org Synth 2024; 21:140-165. [PMID: 37005400 DOI: 10.2174/1570179420666230330170845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 01/25/2023] [Accepted: 02/10/2023] [Indexed: 04/04/2023]
Abstract
BACKGROUND Isocyanide is an intriguing one-carbon synthon that is frequently employed in a variety of carbon-carbon and carbon-heteroatom bond-forming reactions. Isocyanide-based multicomponent reactions (IMCRs) are effective synthetic tools in organic synthesis for the preparation of complex heterocyclic molecules. The IMCRs in water have become an attractive research direction, enabling simultaneous growth of both IMCRs and green solvents towards ideal organic synthesis. OBJECTIVE The goal of this review is to provide a general overview of IMCRs in water or biphasic aqueous systems for accessing various organic molecules, as well as an examination of their benefits and mechanistic insights. CONCLUSION High atom economies, mild reaction conditions, high yields, and catalyst-free processes are crucial features of these IMCRs in water or biphasic aqueous systems.
Collapse
Affiliation(s)
- Chitteti Divyavani
- Department of Chemistry, Sri Padmavathi Women's Degree & PG College, Tirupati, Andhra Pradesh, India
| | - Pannala Padmaja
- Centre for Semio Chemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
| | | |
Collapse
|
2
|
He P, Wang Y, Gu Y, Cheng L, Zhu Y, Wang C, Li Y. Silver-Mediated Intermolecular [2 + 2 + 1] Cyclization of Terminal Alkynones with Elemental Selenium: Regioselective Synthesis of 2,4- or 3,4-Dicarbonylselenophenes. J Org Chem 2023; 88:14978-14988. [PMID: 37830913 DOI: 10.1021/acs.joc.3c01438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
An efficient and atom-economical silver-mediated [2 + 2 + 1] cyclization protocol for the selective synthesis of 2,4- or 3,4-dicarbonylselenophenes has been developed. Readily accessible substrates, commercially available elemental selenium, and good functional group tolerance make this procedure attractive for the selective synthesis of dicarbonylselenophenes. Preliminary mechanistic investigations indicated that silver acetylene species are possible intermediates for the formation of 3,4-dicarbonylselenophenes.
Collapse
Affiliation(s)
- Peng He
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Ye Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yingge Gu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Lu Cheng
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yilin Zhu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Chengyu Wang
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| |
Collapse
|
3
|
Fei N, Wang Y, Gu Y, Wang Z, Zhu Y, Li Y. Silver-Mediated [2 + 2 + 1] Cyclization of ortho-Propioloylbenzonitriles with Elemental Selenium: Synthesis of 4 H-indeno[1,2- c][1,2]selenazol-4-ones. J Org Chem 2023; 88:13042-13048. [PMID: 37647572 DOI: 10.1021/acs.joc.3c01172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
An efficient silver-mediated [2 + 2 + 1] cyclization protocol of ortho-propioloylbenzonitriles with elemental selenium for the synthesis of 4H-indeno[1,2-c][1,2]selenazol-4-ones has been developed. One C-Se bond, one N-Se bond, and one C-C bond were rapidly constructed in one step. The reaction might proceed via the formation of a highly reactive selenoketene intermediate, followed by intramolecular cyclization.
Collapse
Affiliation(s)
- Nana Fei
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Ye Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yingge Gu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Zongkang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yilin Zhu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
- Key Laboratory of Polar Materials and Devices, Ministry of Education, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| |
Collapse
|
4
|
Verdoorn D, Ranjan P, de Reuver T, Janssen E, Vande Velde CML, Saya JM, Maes BUW, Orru RVA. A Cobalt Mediated Nitrene Transfer aza-Wittig Cascade Reaction To Access 1,3,4-Oxadiazole Scaffolds. Org Lett 2023; 25:4005-4009. [PMID: 37224106 PMCID: PMC10262268 DOI: 10.1021/acs.orglett.3c00959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Indexed: 05/26/2023]
Abstract
A cobalt(II) mediated three-component synthesis of 5-substituted-N-sulfonyl-1,3,4-oxadiazol-2(3H)-imines using sulfonyl azides, N-isocyaniminotriphenylphosphorane (NIITP), and carboxylic acids has been developed. This one-pot tandem reaction starts with a nitrene transfer to NIITP, followed by addition of the carboxylic acid to the in situ formed carbodiimide and subsequent intramolecular aza-Wittig reaction. Both the steric constraints of carboxylic acid and the stoichiometry of the employed cobalt salt determine the selectivity toward the two products, i.e. 5-substituted-N-sulfonyl-1,3,4-oxadiazol-2(3H)-imine versus 5-substituted-4-tosyl-2,4-dihydro-3H-1,2,4-triazol-3-one.
Collapse
Affiliation(s)
- Daniël
S. Verdoorn
- Division
of Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
| | - Prabhat Ranjan
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
| | - Tim de Reuver
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
| | - Elwin Janssen
- Department
of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for
Molecular and Life Sciences (AIMMS), Vrije
Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Christophe M. L. Vande Velde
- Intelligence
in Processes, Advanced Catalysts and Solvents (iPRACS), Faculty of
Applied Engineering, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Jordy M. Saya
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
| | - Bert U. W. Maes
- Division
of Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Romano V. A. Orru
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
| |
Collapse
|
5
|
Zou X, Zheng L, Zhuo X, Zhong Y, Wu Y, Yang B, He Q, Guo W. Copper-Promoted Aerobic Oxidative [3+2] Cycloaddition Reactions of N,N-Disubstituted Hydrazines with Alkynoates: Access to Substituted Pyrazoles. J Org Chem 2023; 88:2190-2206. [PMID: 36724037 DOI: 10.1021/acs.joc.2c02610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A copper-promoted aerobic oxidative [3+2] cycloaddition reaction for the synthesis of various substituted pyrazoles from N,N-disubstituted hydrazines with alkynoates in the presence of bases is developed. This work involves a direct C(sp3)-H functionalization and the formation of new C-C/C-N bonds. In this strategy, inexpensive and easily available Cu2O serves as the promoter and air acts as the green oxidant. The reaction exhibits the advantages of high atom and step economy, high regioselectivity, and easy operation.
Collapse
Affiliation(s)
- Xiaoying Zou
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Lvyin Zheng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Xiaoya Zhuo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Yumei Zhong
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Yingying Wu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Beining Yang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Qifang He
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Wei Guo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| |
Collapse
|
6
|
Kariuki BM, Abdel-Wahab BF, Mohamed HA, Bekheit MS, El-Hiti GA. Synthesis and Characterization of Novel 2-(1,2,3-Triazol-4-yl)-4,5-dihydro-1 H-pyrazol-1-yl)thiazoles and 2-(4,5-Dihydro-1 H-pyrazol-1-yl)-4-(1 H-1,2,3-triazol-4-yl)thiazoles. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248904. [PMID: 36558037 PMCID: PMC9786072 DOI: 10.3390/molecules27248904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/08/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
Reactions of 1-(5-methyl)-1H-1,2,3-triazol-4-yl)ethan-1-ones and benzaldehydes in ethanol under basic conditions gave the corresponding chalcones. Reactions of the chalcones combined with thiosemicarbazide in dry ethanol containing sodium hydroxide afforded the corresponding pyrazolin-N-thioamides. Reactions of the synthesized pyrazolin-N-thioamides and several ketones (namely, ethyl 2-chloro-3-oxobutanoate, 2-bromoacetylbenzofuran, and hydrazonoyl chloride) gave the corresponding novel 2-(1,2,3-triazol-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)thiazoles in high yields (77-90%). Additionally, 2-(4,5-dihydro-1H-pyrazol-1-yl)-4-(1H-1,2,3-triazol-4-yl)thiazoles were obtained in high yields (84-87%) from reactions with N-pyrazoline-thioamides and 4-bromoacetyl-1,2,3-triazoles under basic conditions. The structures of six of the newly synthesized heterocycles were confirmed by X-ray crystallography.
Collapse
Affiliation(s)
- Benson M. Kariuki
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
- Correspondence: (B.M.K.); (G.A.E.-H.); Tel.: +44-29-2087-0401 (B.M.K.); +966-1-1469-3778 (G.A.E.-H.); Fax: +966-1-1469-3536 (G.A.E.-H.)
| | - Bakr F. Abdel-Wahab
- Applied Organic Chemistry Department, Chemical Industries Research Institute, National Research Centre, Dokki, Giza 12622, Egypt
| | - Hanan A. Mohamed
- Applied Organic Chemistry Department, Chemical Industries Research Institute, National Research Centre, Dokki, Giza 12622, Egypt
| | - Mohamed S. Bekheit
- Department of Pesticide Chemistry, National Research Centre, Dokki, Giza 12622, Egypt
| | - Gamal A. El-Hiti
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh 11433, Saudi Arabia
- Correspondence: (B.M.K.); (G.A.E.-H.); Tel.: +44-29-2087-0401 (B.M.K.); +966-1-1469-3778 (G.A.E.-H.); Fax: +966-1-1469-3536 (G.A.E.-H.)
| |
Collapse
|
7
|
He J, Liu Y, Feng Y, Li X, Liu P, Dai B. Cs 2CO 3-Promoted [3 + 2] Cyclization of Chalcone and N-Tosylhydrazone. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2078845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jing He
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Yali Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Yijiao Feng
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Xuezhen Li
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Ping Liu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| | - Bin Dai
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, China
| |
Collapse
|
8
|
Synthesis and Structure Determination of 2-Cyano-3-(1-phenyl-3-(thiophen-2-yl)-1H-pyrazol-4-yl)acrylamide. MOLBANK 2022. [DOI: 10.3390/m1372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
2-Cyano-3-(1-phenyl-3-(thiophen-2-yl)-1H-pyrazol-4-yl)acrylamide (3) was synthesized in 90% yield from condensation of equimolar equivalents of 1-phenyl-3-(thiophen-2-yl)-1H-pyrazole-4-carbaldehyde (1) and 2-cyanoacetamide (2) in boiling ethanol under basic condition for 45 min. The structure of 3 was determined using NMR spectroscopy and single crystal X-ray diffraction.
Collapse
|
9
|
Guo H, Tian L, Liu Y, Wan JP. DMSO as a C 1 Source for [2 + 2 + 1] Pyrazole Ring Construction via Metal-Free Annulation with Enaminones and Hydrazines. Org Lett 2021; 24:228-233. [PMID: 34908420 DOI: 10.1021/acs.orglett.1c03879] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A cascade reaction between enaminones, hydrazines, and dimethyl sulfoxide (DMSO) for the synthesis of 1,4-disubstituted pyrazoles catalyzed by molecular iodine in the presence of Selectfluor has been realized. DMSO plays a dual role as the C1 source and the reaction medium. In addition, the synthesis of 1,3,4-trisubstituted pyrazoles using aldehydes as alternative C1 building blocks has also been achieved.
Collapse
Affiliation(s)
- Haijin Guo
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Lihong Tian
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| |
Collapse
|
10
|
Shi T, Wu Z, Jia T, Zhang C, Zeng L, Zhuang R, Zhang J, Liu S, Shao J, Zhu H. Sequential [3+2] annulation reaction of prop-2-ynylsulfonium salts and hydrazonyl chlorides: synthesis of pyrazoles containing functional motifs. Chem Commun (Camb) 2021; 57:8460-8463. [PMID: 34342307 DOI: 10.1039/d1cc02735b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A novel sequential [3+2] annulation reaction has been developed using prop-2-ynylsulfonium salts and hydrazonyl chlorides, affording a series of pyrazoles with functional motifs that can be post modified in the preparation of various drugs or drug candidates. Further transformation and gram-scale operations could also be achieved efficiently.
Collapse
Affiliation(s)
- Tao Shi
- School of Medicine, Zhejiang University City College, Hangzhou, 310015, P. R. China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Wang Y, Yuan Y, Wang Z, Gu Y, Fu S, Kong L, Li Y. Silver-Mediated [2 + 2 + 1] Cyclization Reaction of Diynes with Elemental Selenium/Sulfur To Synthesize 3,4-Substituted Cyclopenta[ c]selenophenes/Cyclopenta[ c]thiophenes. Org Lett 2021; 23:5911-5916. [PMID: 34283626 DOI: 10.1021/acs.orglett.1c02018] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient and atom-economical silver-mediated [2 + 2 + 1] cyclization protocol for the synthesis of 3,4-fused-ring-substituted and 2,5-unsubstituted selenophenes or thiophenes has been developed. Two C-Se/C-S bonds and one C-C bond were rapidly constructed in one step. Readily accessible substrates, commercially available elemental selenium/sulfur, and good functional group tolerance make this procedure attractive for the synthesis of π-conjugated material molecules.
Collapse
Affiliation(s)
- Ye Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Yang Yuan
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Zongkang Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Yingge Gu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Siyi Fu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China
| | - Lingkai Kong
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, China.,Key Laboratory of Polar Materials and Devices, Ministry of Education, East China Normal University, Shanghai 200241, China
| |
Collapse
|
12
|
Kumar AD, Vivek HK, Srinivasan B, Naveen S, Kumara K, Lokanath NK, Byrappa K, Kumar KA. Design, synthesis, characterization, crystal structure, Hirshfeld surface analysis, DFT calculations, anticancer, angiogenic properties of new pyrazole carboxamide derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130271] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
13
|
Silver-catalyzed unstrained C(CO)-alkyl bond scission via [3+2]/retro-[3+2] cycloaddition of ketones with N-isocyanoiminotriphenylphosphorane. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1000-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
Golovanov AA, Odin IS, Gusev DM, Vologzhanina AV, Sosnin IM, Grabovskiy SA. Reactivity of Cross-Conjugated Enynones in Cyclocondensations with Hydrazines: Synthesis of Pyrazoles and Pyrazolines. J Org Chem 2021; 86:7229-7241. [PMID: 33955756 DOI: 10.1021/acs.joc.1c00569] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The cyclocondensation of cross-conjugated enynones, dienynones, and trienynones (easily available due to low-cost starting compounds) with arylhydrazines leads to the regioselective synthesis of pyrazole derivatives (dihetaryl-substituted ethens, buta-1,3-diens, and hexa-1,3,5-triens) or results in 4,5-dihydro-1H-pyrazoles in good yield. The reaction path is controlled by the character of the substituent in enynone: the pyrazoles are obtained from the reaction of substrates that contain five-membered heteroaromatic substituents with arylhydrazines, and the 4,5-dihydro-1H-pyrazoles are obtained from the reaction of 1,5-diphenylpent-1-en-4-yn-3-one with arylhydrazines consistently. Despite the presence of a substituent, cyclocondensation of 2-hydrazinylpyridine with all of examined cross-conjugated enynones leads to the formation of pyrazoles. The reaction does not require special conditions (temperature, catalyst, inert atmosphere). The cyclocondensation pathways are determined by the electronic effect of an electron-rich five-membered heteroaromatic ring in the substrate. The synthesis allows use of various substituents and functional groups in enynone and hydrazine. The present method features high yields and simplicity of the product purification. The obtained pyrazoles possess fluorescent properties with a quantum yield up to 31%.
Collapse
Affiliation(s)
| | - Ivan S Odin
- Togliatti State University, 14 Belorusskaya Str., 445020 Togliatti, Russia
| | - Dmitry M Gusev
- Togliatti State University, 14 Belorusskaya Str., 445020 Togliatti, Russia
| | - Anna V Vologzhanina
- A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Science, 28 Vavilova Str., 119991 Moscow, Russia
| | - Ilya M Sosnin
- Togliatti State University, 14 Belorusskaya Str., 445020 Togliatti, Russia
| | - Stanislav A Grabovskiy
- Ufa Institute of Chemistry, UFRS of the Russian Academy of Science, 71 October Av., 450054 Ufa, Russia
| |
Collapse
|
15
|
Pyrazole Scaffold Synthesis, Functionalization, and Applications in Alzheimer's Disease and Parkinson's Disease Treatment (2011-2020). Molecules 2021; 26:molecules26051202. [PMID: 33668128 PMCID: PMC7956461 DOI: 10.3390/molecules26051202] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/20/2021] [Accepted: 02/22/2021] [Indexed: 11/17/2022] Open
Abstract
The remarkable prevalence of pyrazole scaffolds in a versatile array of bioactive molecules ranging from apixaban, an anticoagulant used to treat and prevent blood clots and stroke, to bixafen, a pyrazole-carboxamide fungicide used to control diseases of rapeseed and cereal plants, has encouraged both medicinal and organic chemists to explore new methods in developing pyrazole-containing compounds for different applications. Although numerous synthetic strategies have been developed in the last 10 years, there has not been a comprehensive overview of synthesis and the implication of recent advances for treating neurodegenerative disease. This review first presents the advances in pyrazole scaffold synthesis and their functionalization that have been published during the last decade (2011-2020). We then narrow the focus to the application of these strategies in the development of therapeutics for neurodegenerative diseases, particularly for Alzheimer's disease (AD) and Parkinson's disease (PD).
Collapse
|
16
|
Mainkar PS, Vankamamidi A, Chandrasekhar S. More Twins in the Scientific Literature of the 21st Century. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.201915777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Prathama S. Mainkar
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology Tarnaka Hyderabad 500007 TS India
| | - Ambica Vankamamidi
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology Tarnaka Hyderabad 500007 TS India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis & Process Chemistry CSIR-Indian Institute of Chemical Technology Tarnaka Hyderabad 500007 TS India
| |
Collapse
|
17
|
Yang H, Lu SN, Song Y, Chen Z, Wu XF. Copper-mediated [3 + 2] cycloaddition of trifluoroacetimidoyl chlorides and N-isocyanoiminotriphenylphosphorane for the synthesis of 3-trifluoromethyl-1,2,4-triazoles. Org Chem Front 2021. [DOI: 10.1039/d1qo00843a] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Herein, a facile and straightforward route to synthesize 3-trifluoromethyl-1,2,4-triazoles via copper-mediated [3 + 2] cycloaddition of trifluoroacetimidoyl chlorides and N-isocyanoiminotriphenylphosphorane (NIITP) has been described.
Collapse
Affiliation(s)
- Hefei Yang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Shu-Ning Lu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Yufei Song
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Zhengkai Chen
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Straβe 29a, 18059 Rostock, Germany
| |
Collapse
|
18
|
Shan Y, Su L, Chen D, Yang M, Xie W, Qiu G. Palladium-catalyzed concerted [4 + 1] cyclization of prop-2-yn-1-ones and isocyanides. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.04.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
19
|
Ding MW, Sun M, Zhao L, Yu YL. DEAD-Mediated Oxidative Ugi/Aza-Wittig Reaction for the Synthesis of 5-(1,2,3,4-Tetrahydroisoquinolin-1-yl)-1,3,4-oxadiazoles Starting from (N-Isocyanimine)triphenylphosphorane. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1705967] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractA one-pot protocol for the synthesis of 5-(1,2,3,4-tetrahydroisoquinolin-1-yl)-1,3,4-oxadiazoles via DEAD-mediated oxidative Ugi/aza-Wittig reaction has been developed. The reaction of (N-isocyanimine)triphenylphosphorane, carboxylic acids, and N-aryl-1,2,3,4-tetrahydroisoquinolines produced polysubstituted 5-(1,2,3,4-tetrahydroisoquinolin-1-yl)-1,3,4-oxadiazoles directly in good yields in the presence of DEAD as an oxidant.
Collapse
|
20
|
Liu Z, Cao S, Wu J, Zanoni G, Sivaguru P, Bi X. Palladium(II)-Catalyzed Cross-Coupling of Diazo Compounds and Isocyanides to Access Ketenimines. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02867] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhaohong Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Shanshan Cao
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Jiayi Wu
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Giuseppe Zanoni
- Department of Chemistry, University of Pavia, Viale Taramelli 12, Pavia 27100, Italy
| | | | - Xihe Bi
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| |
Collapse
|
21
|
Fan Z, Feng J, Hou Y, Rao M, Cheng J. Copper-Catalyzed Aerobic Cyclization of β,γ-Unsaturated Hydrazones with Concomitant C═C Bond Cleavage. Org Lett 2020; 22:7981-7985. [PMID: 33021381 DOI: 10.1021/acs.orglett.0c02911] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A Cu-catalyzed aerobic oxidative cyclization of β,γ-unsaturated hydrazones for the preparation of pyrazole derivatives has been developed. The hydrazonyl radical promoted the cyclization, along with a concomitant C═C bond cleavage of β,γ-unsaturated hydrazones. This process has been verified via several control experiments, including a radical-trapping study, an 18O-labeling method, and the identification of the possible byproducts. The advantages of this reaction include operational simplicity, a broad reaction scope, and a mild selective reaction process.
Collapse
Affiliation(s)
- Zhenwei Fan
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Jiahao Feng
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Yuchen Hou
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Min Rao
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Jiajia Cheng
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| |
Collapse
|
22
|
Li D, Qiu S, Chen Y, Wu L. K
2
CO
3
‐Promoted Pyrazoles Synthesis from 1,3‐Dipolar Cycloaddition of
N
‐Tosylhydrazones with Acetylene Gas. ChemistrySelect 2020. [DOI: 10.1002/slct.202003067] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Dongying Li
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education Hainan Normal University No.99, Longkun South Road Haikou 571158 P. R. China
| | - Shanguang Qiu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education Hainan Normal University No.99, Longkun South Road Haikou 571158 P. R. China
| | - Yuxue Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education Hainan Normal University No.99, Longkun South Road Haikou 571158 P. R. China
| | - Luyong Wu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education Hainan Normal University No.99, Longkun South Road Haikou 571158 P. R. China
| |
Collapse
|
23
|
Ojeda-Carralero GM, Ceballos LG, Coro J, Rivera DG. One Reacts as Two: Applications of N-Isocyaniminotriphenylphosphorane in Diversity-Oriented Synthesis. ACS COMBINATORIAL SCIENCE 2020; 22:475-494. [PMID: 32631055 DOI: 10.1021/acscombsci.0c00111] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
N-Isocyaniminotriphenylphosphorane (NIITP) is a functionalized isonitrile that has been extensively applied in a variety of organic reactions during the last two decades. This Review summarizes the most important applications in organic synthesis of this versatile reactant, with the focus posed on mechanistic and methodological aspects allowing the generation of molecular diversity. NIITP combines the reactivity of isonitriles with that of phosphoranes to enable chemical transformations employed in the construction of compound libraries. Here, we cover from the initial applications of NIITP in the Nef isocyanide reaction to further derivations that render a variety of heterocyclic scaffolds. The presence of the isonitrile moiety in this singular compound makes possible the double addition of nucleophiles and electrophiles, which followed by inter(intra)molecular aza-Wittig type transformations enable several multicomponent and tandem processes. In particular, we stress the impact of NIITP in oxadiazole chemistry, from the early two-component transformations to recent examples of multicomponent reactions that take place in the presence of suitable electrophiles. In addition, we briefly describe the role of NIITP chemistry in generating skeletal and conformational diversity in cyclic peptides. The reaction of NIITP with alkynes is thoroughly revised, with particular emphasis on silver-catalyzed processes that have been developed in the last years. Biomedicinal applications of some reaction products are also mentioned along with a perspective of future applications of this reactant.
Collapse
Affiliation(s)
- Gerardo M. Ojeda-Carralero
- Center for Natural Product Research, Faculty of Chemistry, University of Havana, Zapata and G, Havana 10400, Cuba
| | - Leonardo G. Ceballos
- Center for Natural Product Research, Faculty of Chemistry, University of Havana, Zapata and G, Havana 10400, Cuba
| | - Julieta Coro
- Laboratory of Organic Synthesis, Faculty of Chemistry, University of Havana, Zapata and G, 10400, La Habana, Cuba
| | - Daniel G. Rivera
- Center for Natural Product Research, Faculty of Chemistry, University of Havana, Zapata and G, Havana 10400, Cuba
| |
Collapse
|
24
|
Mainkar PS, Vankamamidi A, Chandrasekhar S. More Twins in the Scientific Literature of the 21st Century. Angew Chem Int Ed Engl 2020; 60:544-548. [PMID: 32170891 DOI: 10.1002/anie.201915777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Indexed: 12/23/2022]
Abstract
This Essay highlights the complex issue of twinning in science publications. Historical accounts present cases where two scientists focused on the same problem and came up with the same solution following different paths. This has changed in the present day. The concurrent publication of rather similar research papers from different groups has increased in frequency since 2010. In the past, twinning in research publications was serendipitous, and there was a healthy competition among teams working on similar projects. Today, twinning has become more frequent. This can be attributed to the urge of researchers to have publications on popular topics, the tendency to base research programs on popular keywords, and funding agencies preferentially supporting certain areas of research. With vast amounts of literature being generated, editorial offices and referees may not be able to find these twins very easily. As we inch away from human ingenuity towards artificial intelligence, twinning may become even more frequent.
Collapse
Affiliation(s)
- Prathama S Mainkar
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500007, TS, India
| | - Ambica Vankamamidi
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500007, TS, India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500007, TS, India
| |
Collapse
|
25
|
Li M, Wu W, Jiang H. Recent Advances in Silver‐Catalyzed Transformations of Electronically Unbiased Alkenes and Alkynes. ChemCatChem 2020. [DOI: 10.1002/cctc.202000743] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Meng Li
- State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. China
| | - Wanqing Wu
- State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. China
- State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Huanfeng Jiang
- State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 P. R. China
| |
Collapse
|
26
|
Chen D, Yang M, Li J, Cui P, Su L, Shan Y, You J, Rojsitthisak P, Liu JB, Qiu G. Palladium-Catalyzed Cycloaddition of Alkynylimines, Double Isocyanides, and H 2O/KOAc. J Org Chem 2020; 85:6441-6449. [PMID: 32321251 DOI: 10.1021/acs.joc.0c00323] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In this work, a palladium-catalyzed cyclization of alkynylimines and double isocyanides is described. This facile procedure is efficient for synthesizing various 4-amidyl-2-aminopyrroles. Mechanism investigation indicates that a four-membered ring-fused pyrrole species is a key intermediate and the reaction involves [4 + 1] cycloaddition, protonation, nucleophilic addition, 1,4-addition of isocyanide, and rearomatization. Interestingly, the linear dipyrrole derivative is found to be an appropriate fluoride ion probe with a remarkable emission change, which could serve as a potential candidate for optoelectronic conjugated materials.
Collapse
Affiliation(s)
- Dianpeng Chen
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Min Yang
- Department of Forensic Science, Gannan Medical University, Ganzhou, Jiangxi 341000, China
| | - Jianming Li
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Peiying Cui
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Lei Su
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Yingying Shan
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Jinmao You
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Pornchai Rojsitthisak
- Department of Food and Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phayathai Road, Patumwan, Bangkok 10330, Thailand
| | - Jin-Biao Liu
- School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Guanyinsheng Qiu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China
| |
Collapse
|
27
|
Tian L, Wan J, Sheng S. Transition Metal‐free C−H Sulfonylation and Pyrazole Annulation Cascade for the Synthesis of 4‐Sulfonyl Pyrazoles. ChemCatChem 2020. [DOI: 10.1002/cctc.202000244] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lihong Tian
- College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 P. R. China
| | - Jie‐Ping Wan
- College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 P. R. China
| | - Shouri Sheng
- College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 P. R. China
| |
Collapse
|
28
|
Sivaguru P, Cao S, Babu KR, Bi X. Silver-Catalyzed Activation of Terminal Alkynes for Synthesizing Nitrogen-Containing Molecules. Acc Chem Res 2020; 53:662-675. [PMID: 32078302 DOI: 10.1021/acs.accounts.9b00623] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Alkynes are one of the most abundant chemicals in organic chemistry, and therefore the development of catalytic reactions to transform alkynes into other useful functionalities is of great value. In recent decades, extraordinary advances have been made in this area with transition-metal catalysis, and silver-based reagents are ideal for the activation of alkynes. This high reactivity is probably due to the superior π-Lewis acidic, carbophilic behavior of silver(I), allowing it to selectively activate carbon-carbon triple bonds (C≡C) through the formation of a silver-π complex. Within this field, we have been interested in the activation and subsequent reactions of readily accessible terminal alkynes for the synthesis of nitrogen-containing compounds, which has generally received less attention than methods involving internal alkynes. This is possibly due to the lack of suitable reactive reaction partners that are compatible under transition metals. Therefore, a thorough understanding of the factors that influence homogeneous silver catalysis and the identification of the appropriate reaction partners can provide a powerful platform for designing more efficient silver-catalyzed reactions of terminal alkynes. In this context, we envisioned that using readily available, environmentally benign, and inexpensive trimethylsilyl azide (TMSN3) or an isocyanide as the nitrogen-donor would be the key to develop novel reactions of terminal alkynes.This Account describes our efforts since 2013 toward the development of novel silver-catalyzed tandem reactions of terminal alkynes with either TMSN3 or isocyanides for the assembly of various nitrogen-containing compounds. The first section of this Account discusses the initial developments in the silver-catalyzed hydroazidation of terminal alkynes with TMSN3 and the subsequent advances made in our laboratory. We first describe the discovery and experimental and computational mechanistic investigations of silver-catalyzed hydroazidation reactions, which is the most efficient strategy reported to date for accessing vinyl azides. Mechanistic study of this hydroazidation reaction provides an alternative activation mode for terminal alkyne conversion in transition metal catalysis. We then present the chemistry of in situ generated vinyl azides, including one-pot tandem radical addition/cyclization or migration reactions of terminal alkynes to access a variety of nitrogen-containing molecules. Finally, we discuss the one-pot, multistep tandem hydroazidation and 1,2-azide migratory gem-difluorination of terminal alkynes for the synthesis of β-difluorinated alkyl azides. The second section describes the silver-catalyzed coupling reactions between terminal alkynes and isocyanides, which offer a straightforward method for accessing synthetically useful building blocks, such as pyrroles, allenamides, benzofuran, vinyl sulfones, indazolines, propiolonitriles, and pyrazoles. The high efficiency, mild conditions, low cost, broad substrate scope, high chemo- and regioselectivity, step economy, and ecofriendliness of the developed approaches make them attractive and practical. The progress in this area provides guiding principles for designing new reactions of terminal alkynes that can be extended to various nitrogen-containing molecules of interest to medicinal and materials chemists.
Collapse
Affiliation(s)
- Paramasivam Sivaguru
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Shanshan Cao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Kaki Raveendra Babu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| |
Collapse
|
29
|
Yamamoto T, Togo H. Transformation of arenes into 3-arylpyrazoles and 3-arylisoxazolines with β-bromopropionyl chloride, hydrazine, and hydroxylamine. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130920] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
30
|
Affiliation(s)
- Yeming Wang
- Institute of Chemical and Industrial BioengineeringJilin Engineering Normal University Kaixuan Road, No.3050. Changchun 130052 China
| | - Chaoqun Zhang
- Institute of Chemical and Industrial BioengineeringJilin Engineering Normal University Kaixuan Road, No.3050. Changchun 130052 China
| |
Collapse
|
31
|
Taylor MK, Juhl M, Hadaf GB, Hwang D, Velasquez E, Oktawiec J, Lefton JB, Runčevski T, Long JR, Lee JW. Palladium-catalyzed oxidative homocoupling of pyrazole boronic esters to access versatile bipyrazoles and the flexible metal–organic framework Co(4,4′-bipyrazolate). Chem Commun (Camb) 2020; 56:1195-1198. [DOI: 10.1039/c9cc08614e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile catalytic protocol achieves the homocoupling of pyrazole boronic esters, enabling access to the structurally-flexible metal–organic framework Co(bpz).
Collapse
Affiliation(s)
- Mercedes K. Taylor
- Center for Integrated Nanotechnologies
- Sandia National Laboratories
- Albuquerque
- USA
- Department of Chemistry
| | - Martin Juhl
- Department of Chemistry & Nano-Science Center
- University of Copenhagen
- Denmark
| | - Gul Barg Hadaf
- Department of Chemistry & Nano-Science Center
- University of Copenhagen
- Denmark
| | - Dasol Hwang
- Department of Chemistry & Nano-Science Center
- University of Copenhagen
- Denmark
| | - Ever Velasquez
- Materials Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- Department of Chemical and Biomolecular Engineering
| | - Julia Oktawiec
- Department of Chemistry
- University of California
- Berkeley
- USA
| | | | | | - Jeffrey R. Long
- Department of Chemistry
- University of California
- Berkeley
- USA
- Materials Sciences Division
| | - Ji-Woong Lee
- Department of Chemistry & Nano-Science Center
- University of Copenhagen
- Denmark
| |
Collapse
|
32
|
Kong XF, Guo XY, Gu ZY, Wei LS, Liu LL, Mo DL, Pan CX, Su GF. Silver(i)-catalyzed selective hydroalkoxylation of C2-alkynyl quinazolinones to synthesize quinazolinone-fused eight-membered N,O-heterocycles. Org Chem Front 2020. [DOI: 10.1039/d0qo00437e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A silver-catalyzed selective 8-endo-dig cyclization of C2-alkynyl quinazolinones was developed to prepare a series of novel quinazolinone-fused eight-membered N,O-heterocycles in good-to-excellent yields under mild reaction conditions.
Collapse
Affiliation(s)
- Xiang-Fei Kong
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Xiu-Yun Guo
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Zi-Yu Gu
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Lin-Su Wei
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Lu-Lu Liu
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Dong-Liang Mo
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Cheng-Xue Pan
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| | - Gui-Fa Su
- State key laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- China
| |
Collapse
|
33
|
Wang Y, Yu Y, Zhao L, Ning Y. Silver-Catalyzed Cascade Reaction of N
-Isocyaniminotriphenylphosphorane with Aldehydes: Synthesis of Unsymmetrical Azines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901433] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yeming Wang
- Institute of Chemical and Industrial Bioengineering; Jilin Engineering Normal University; Kaixuan Road, No. 3050 130052 Changchun China
| | - Yang Yu
- Department of Chemistry; Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Northeast Normal University; Renmin Street, No. 5268 130024 Changchun China
| | - Liping Zhao
- Institute of Chemical and Industrial Bioengineering; Jilin Engineering Normal University; Kaixuan Road, No. 3050 130052 Changchun China
| | - Yongquan Ning
- Department of Chemistry; Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Northeast Normal University; Renmin Street, No. 5268 130024 Changchun China
| |
Collapse
|
34
|
Zhang G, Fan Q, Zhao Y, Ding C. Copper-Promoted Oxidative Intramolecular C-H Amination of Hydrazones to Synthesize 1H
-Indazoles and 1H
-Pyrazoles Using a Cleavable Directing Group. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900947] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Guofu Zhang
- College of Chemical Engineering; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Qiankun Fan
- College of Chemical Engineering; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Yiyong Zhao
- College of Chemical Engineering; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Chengrong Ding
- College of Chemical Engineering; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| |
Collapse
|
35
|
Mi P, Lang J, Lin S. Retraction: Molybdenum-silver co-catalyzed cycloaddition of alkynes with N-isocyanoiminotriphenylphosphorane (NIITP): an efficient strategy for the synthesis of monosubstituted pyrazoles. Chem Commun (Camb) 2019; 55:13471. [DOI: 10.1039/c9cc90478f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Retraction of ‘Molybdenum-silver co-catalyzed cycloaddition of alkynes with N-isocyanoiminotriphenylphosphorane (NIITP): an efficient strategy for the synthesis of monosubstituted pyrazoles’ by Pengbing Mi et al., Chem. Commun., 2019, 55, 7986–7989.
Collapse
Affiliation(s)
- Pengbing Mi
- College of Light Industry and Textile and Food Engineering
- Sichuan University
- Chengdu 610065
- China
- Institute of Fundamental and Frontier Sciences
| | - Jiajia Lang
- Research Center for Medicine
- University of South China
- Hengyang 421001
- China
| | - Shaojian Lin
- College of Light Industry and Textile and Food Engineering
- Sichuan University
- Chengdu 610065
- China
| |
Collapse
|